Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fff922b8fa0300d…

MALICIOUS

PDF

52.1 KB Created: 2020-08-06 03:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd093f6c862821099ee195ee875667f1 SHA-1: 4fce7b567dae3c0c0106286232331156766bbbb4 SHA-256: 1fff922b8fa0300da8e144b92826578cc31067c0428e012333863558f69b92ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for malicious redirector links, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely to manipulate search engine results. The primary attack vector appears to be tricking the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=bloomberg+market+concepts+notes+pdf In PDF document text
    • http://files.transfiguration-mtl.org/uploads/1/3/0/7/130776054/279083d9564e40f.pdfIn PDF document text
    • http://files.mrshenrysroom.com/uploads/1/3/0/9/130968996/8387091.pdfIn PDF document text
    • http://files.glomom.org/uploads/1/3/2/6/132695741/tanirurolu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/sidobuwupalikaxutikax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8859/3571/files/vuwabuzanesuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8673/2707/files/83636742428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6893/2767/files/vinaroveledepimetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/58906156471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/53145588767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0839/files/lamefipeguzejides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/71137612275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7971/0360/files/sabaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9979/1268/files/facebook_family_feud_guide.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B88 5728 bytes
SHA-256: fd057a7c7411c5f09e0d74433f34e653492634b0cf59cc72692bb43fd71bc5af
font_01_sfnt_off00009eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EEA 10604 bytes
SHA-256: add2e1cf128bd94702fb1904ccea216b89a8e4474d183d0e838a426bbfb3af88

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